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07a70f38e9
Although the bspec lists several MMIO ranges as "MSLICE," it turns out that a subset of these are of a "GAM" subclass that has unique rules and doesn't followed regular mslice steering behavior. * Xe_HP SDV: GAM ranges must always be steered to 0,0. These registers share the regular steering control register (0xFDC) with other steering types * DG2: GAM ranges must always be steered to 1,0. GAM registers have a dedicated steering control register (0xFE0) so we can set the value once at startup and rely on implicit steering. Technically the hardware default should already be set to 1,0 properly, but it never hurts to ensure that in the driver. Bspec: 66534 Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Prathap Kumar Valsan <prathap.kumar.valsan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220916014345.3317739-1-matthew.d.roper@intel.com |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.